... ( x 1 ) , F 2 = - ϕ 2 ( x 1 ) , and the switching index p is determined according to the switching signal σ : [ 0 , ∞ ) → p described by Eq. (13) . Hence, we conclude continuity of x 1 and x 2 by observing that the displacement x...

... Through Observability Analysis ,” IEEE Trans. Aerosp. Electron. Syst. , 28 ( 1 ), pp. 92 – 97 . 10.1109/7.135435 [4] Bar-Itzhack , I. Y. , and Berman , N. , 1998 , “ Control Theoretic Approach to Inertial Navigation System ,” J. Guid. Control , 11 ( 3 ), pp. 237 – 245 . 10.2514...

...Buz A. McCain; Anna G. Stefanopoulou; Jason B. Siegel We analyze the controllability and observability (C/O) of the liquid water distribution in the gas diffusion layer (GDL) of a polymer electrolyte membrane fuel cell (PEMFC) using a one-dimensional channel-to-channel unit fuel cell model...

... of the linearized model of the fractional-order system on the equilibrium point. The second controller is a dynamic state feedback controller and requires observability of the linearized model. In both considered cases, the stabilizability of the model is assumed. The number of inner states in the second controller...

... and a sensor. This provides the scope for significantly reducing the number of transducer elements required for complete controllability and observability of the system and hence reduce the hardware required for controlled system operation. In this paper we advocate underactuation and undersensing in dynamical...

... effects. Starting from this key observation, the vibration attenuation control problem is studied. First of all, by investigating the observability and controllability properties, it can be seen that there is a basic controllability problem in the standard configuration of the plant. To circumvent...

... control. This paper investigates the possibility of eliminating the pressure measurement required for nonlinear control in lieu of a nonlinear pressure observer, based on measurement of the output motion. A nonlinear observability analysis is conducted that demonstrates that such a system loses local...

...Ove F. Storset; Anna G. Stefanopoulou; Roy Smith The paper presents an adaptive observer for in-cylinder air charge estimation for turbocharged diesel engines without exhaust gas recirculation (EGR). We assess the observability of the mean value engine model when the intake manifold pressure...

...Rafael Martı´nez-Guerra; Ricardo Aguilar; Alexander Poznyak The robust observer design for the online estimation of heat in continuous stirred tank reactors, containing nonstructured uncertainties within its model description as well as noisy temperature measurements, is addressed. The proposed...

...Ukpai I. Ukpai; Suhada Jayasuriya, Kotzebue Professor Balanced reduction relies on the internal balancing of the controllability and observability grammians to eliminate weakly observable and controllable modes. Weighting functions are often used to improve this procedure. Several benefits exist...

...Vladimir Polotski Stabilization of linear systems by state feedback is an important problem of the controller design. The design of observers with appropriate error dynamics is a dual problem. This duality leads, at first glance, to the equivalence of the responses in the synthesized systems...

... 14, 2003; final revision, August 11, 2003; Associate Editor: A. Alleyne. 14 April 2003 11 August 2003 12 04 2004 compressors proton exchange membrane fuel cells fuel cell vehicles observability eigenvalues and eigenfunctions Fuel cell stack systems are under...

... not be observable without impacts. Each body is possibly constituted by several masses connected by linear springs, so that the internal deformations can be taken into account (the so-called multiple-degrees-of-freedom impacts). For two relevant and different cases, the structural properties of observability...

...Michael V. Basin The paper presents the optimal nonlinear filter for quadratic state and linear observation equations confused with white Gaussian disturbances. The general scheme for obtaining the optimal filter in case of polynomial state and linear observation equations is announced...

... is diagnosable is of great interest to both academia and industry. We present a comprehensive study of the diagnosability of MMPs in this paper. It is based on the state space model and is parallel to the concept of observability in control theory. Analogous to the observability matrix and index...

... but the problem of simultaneous compensation of the two disturbances remains essentially unsolved. The problem stems fundamentally from a lack of observability of disturbances with the same frequency content and is critical for applications where the rotor needs to be stabilized about its geometric center...

...Wen-Jer Chang Almost all robust properties of linear systems can be related directly to properties of the controllability or observability Gramian. A model-based fuzzy controller for a class of uncertain nonlinear systems will be developed in this paper to achieve a common observability Gramian...

..., deduce models independent of system inputs and outputs. FD-MODA uses frequency response methods to deduce models of a single input-output pair. In this paper, an input-output criterion based on controllability and observability is combined with the frequency based criterion used by MODA. The new model...